Home / 85,855,103.36-128,786,642.40-27,565,160

Finding the Fourth Proportional to 85,855,103.36, 128,786,642.40 and 27,565,160

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Solution

The fourth proportional to 85,855,103.36, 128,786,642.40 and 27,565,160 is: 41,349,020.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,855,103.36 : 128,786,642.40 = 27,565,160 : x
  2. Step 2: Convert to fraction form
    85,855,103.36/128,786,642.40 = 27,565,160/x
  3. Step 3: Cross multiply
    85,855,103.36x = 128,786,642.40 × 27,565,160
  4. Step 4: Simplify right side
    85,855,103.36x = 3,550,024,403,618,784
  5. Step 5: Solve for x
    x = 3,550,024,403,618,784/85,855,103.36
  6. Step 6: Final answer
    x = 41,349,020.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.